Mac OS virtual machine

I am trying to set up a MacOS VM, but everytime I start it, it boots only the command promt shell but not the GUI.

I used this guide to set up - https://techsviewer.com/install-macos-10-14-mojave-virtualbox-windows/

Any tips how to get it running properly?

Thanks

I finally managed to get running OS X in older version El Captain, so anyone interested in setting up OS X virtual lab for testing here is the guide I used - https://techsviewer.com/how-to-install-mac-os-x-el-capitan-on-pc-on-virtualbox/